Difference between revisions of "MUC-7 (State of the art)"
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! System name | ! System name | ||
! Short description | ! Short description | ||
| − | ! System type | + | ! System type (1) |
! Main publications | ! Main publications | ||
! Software | ! Software | ||
| − | ! Results | + | ! Results |
|- | |- | ||
| Annotator | | Annotator | ||
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| - | | - | ||
| 93.39% | | 93.39% | ||
| + | |- | ||
| + | | Balie | ||
| + | | Unsupervised approach: no prior training | ||
| + | | U | ||
| + | | Nadeau, Turney and Matwin (2006) | ||
| + | | [http://balie.sourceforge.net sourceforge.net] | ||
| + | | 77.71% (2) | ||
|- | |- | ||
| Baseline | | Baseline | ||
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| Whitelaw and Patrick (2003) | | Whitelaw and Patrick (2003) | ||
| - | | - | ||
| − | | 58.89% | + | | 58.89% (2) |
|- | |- | ||
|} | |} | ||
| − | * '''System type''': R = hand-crafted rules, S = supervised learning, U = unsupervised learning, H = hybrid | + | * (1) '''System type''': R = hand-crafted rules, S = supervised learning, U = unsupervised learning, H = hybrid |
| + | * (2) Calculated on Enamex types only. | ||
| Line 49: | Line 57: | ||
Mikheev, A., Grover, C. and Moens, M. (1998). [http://www-nlpir.nist.gov/related_projects/muc/proceedings/muc_7_proceedings/ltg_muc7.pdf Description of the LTG system used for MUC-7]. ''Proceedings of the Seventh Message Understanding Conference (MUC-7)''. Fairfax, Virginia. | Mikheev, A., Grover, C. and Moens, M. (1998). [http://www-nlpir.nist.gov/related_projects/muc/proceedings/muc_7_proceedings/ltg_muc7.pdf Description of the LTG system used for MUC-7]. ''Proceedings of the Seventh Message Understanding Conference (MUC-7)''. Fairfax, Virginia. | ||
| + | |||
| + | Nadeau, D., Turney, P. D. and Matwin, S. (2006) [http://iit-iti.nrc-cnrc.gc.ca/publications/nrc-48727_e.html Unsupervised Named-Entity Recognition: Generating Gazetteers and Resolving Ambiguity]. ''Proceedings 19th Canadian Conference on Artificial Intelligence''. Québec, Canada. | ||
Whitelaw, C. and Patrick, J. (2003) [http://www.springerlink.com/content/ju66c6a2734fl20u/ Evaluating Corpora for Named Entity Recognition Using Character-Level Features]. ''Proceeding of the 16th Australian Conference on AI''. Perth, Australia. | Whitelaw, C. and Patrick, J. (2003) [http://www.springerlink.com/content/ju66c6a2734fl20u/ Evaluating Corpora for Named Entity Recognition Using Character-Level Features]. ''Proceeding of the 16th Australian Conference on AI''. Perth, Australia. | ||
Revision as of 12:53, 31 July 2007
- Performance measure: F = 2 * Precision * Recall / (Recall + Precision)
- Precision: percentage of named entities found by the algorithm that are correct
- Recall: percentage of named entities defined in the corpus that were found by the program
- Exact calculation of precision and recall is explained in the MUC scoring software
- Training data: Training section of MUC-7 dataset
- Testing data: Formal section of MUC-7 dataset
Table of results
| System name | Short description | System type (1) | Main publications | Software | Results |
|---|---|---|---|---|---|
| Annotator | Human annotator | - | MUC-7 proceedings | - | 97.60% |
| LTG | Best MUC-7 participant | H | Mikheev, Grover and Moens (1998) | - | 93.39% |
| Balie | Unsupervised approach: no prior training | U | Nadeau, Turney and Matwin (2006) | sourceforge.net | 77.71% (2) |
| Baseline | Vocabulary transfer from training to testing | S | Whitelaw and Patrick (2003) | - | 58.89% (2) |
- (1) System type: R = hand-crafted rules, S = supervised learning, U = unsupervised learning, H = hybrid
- (2) Calculated on Enamex types only.
References
Mikheev, A., Grover, C. and Moens, M. (1998). Description of the LTG system used for MUC-7. Proceedings of the Seventh Message Understanding Conference (MUC-7). Fairfax, Virginia.
Nadeau, D., Turney, P. D. and Matwin, S. (2006) Unsupervised Named-Entity Recognition: Generating Gazetteers and Resolving Ambiguity. Proceedings 19th Canadian Conference on Artificial Intelligence. Québec, Canada.
Whitelaw, C. and Patrick, J. (2003) Evaluating Corpora for Named Entity Recognition Using Character-Level Features. Proceeding of the 16th Australian Conference on AI. Perth, Australia.